If they're steel shaft Rifle Flighted then .600"
The TaylorMade 320 series irons were released in 1998. This series included various models designed for different player preferences, focusing on enhancing performance and feel. The 320 series was part of TaylorMade's effort to provide golfers with advanced technology and improved playability.
This driver was released in 2000.
When this happened on my 1999 ml 320, it was the crank shaft positioning sensor. After replacement-problem solved.
1: disconnect the drive shaft from the rear axle. 2: disconnect the front shaft from the transmission (tedious and you need the correct size tool). 3: disassemble the front shaft from the main shaft by pulling them apart from the center or in front of the support and drop the main shaft. 5: remove bolts holding the support and drop and remove the front shaft shaft with the support still connected. 6: remove and replace the support with a wheel puller. 7: replace support with new part. 8: reassemble in reverse. CDARCO
320.
320 thousands
50 percent of 320 = 16050% of 320= 50% * 320= 0.50 * 320= 160
65% of 320= 65% * 320= 0.65 * 320= 208
27% of 320= 27% * 320= 0.27 * 320= 86.4
110% of 320= 110% * 320= 1.1 * 320= 352
85% of 320= 85% * 320= 0.85 * 320= 272
21% of 320= 21% * 320= 0.21 * 320= 67.2